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eimsori [14]
2 years ago
14

The next three (3) problems deal with the titration of 361 mL of 0.501 M carbonic acid (H2CO3) (Ka1 = 4.3 x 10-7, Ka2 = 5.6 x 10

-11) with 1.7 M NaOH. What is the pH of the solution at the 2nd equivalence point? Tries 0/45 What will the pH of the solution be when 0.1351 L of 1.7 M NaOH are added to the 361 mL of 0.501 M carbonic acid? Tries 0/45 How many mL of the 1.7 M NaOH are needed to raise the pH of the carbonic acid solution to a pH of 5.791?
Chemistry
1 answer:
professor190 [17]2 years ago
4 0

Answer:

!

Explanation:

need it too^^

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ankoles [38]

Answer:

if insects helps in pollination that is called entomophily

Explanation:

Some plants having attractive odor and color which attracted the insects towards it and when they come in contact with flowering plant the seed or pollens which is produced by the male part of plant got attached to their body and when insects travels to other flowering plants pollens sheds to stigma which is female part of flower and in results fertilization occur.

4 0
3 years ago
If ammonia is manufactured at 356 k, is the reaction spontaneous, given that the enthalpy and entropy change for the reaction ar
Alchen [17]
The reaction will be spontaneous if Gibb free energy is negative, according the following relation:  
G = H - T*S  
where G is Gibbs free energy, T is change of enthalpy , T is temperature and S is change of entropy  
In the case of ammonia:  
G = -93000 - 356*(-198) = -93000 + 70488 = -22512 j/mol  
As G < 0 then the reaction is spontaneous.
5 0
3 years ago
Calculate the concentration of h3o in a solution that contains 5.5 × 10-5 m oh- at 25°c. identify the solution as acidic, basic,
mariarad [96]
We have been given the OH⁻ ion concentration, we can calculate the pOH concentration. 
pOH = -log [OH⁻]
pOH = - log (5.5 x 10⁻⁵ M)
pOH = 4.26
we can then calculate the pH value 
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pH = 14 - 4.26 
pH = 9.74
since pH > 7 the solution is basic.

by knowing the pH value, we can calculate the H₃O⁺ concentration
pH = - log[H₃O⁺]
[H₃O⁺] = antilog (-pH) = antilog (-9.74)
[H₃O⁺] = 1.82 x 10⁻¹⁰ M
5 0
3 years ago
Read 2 more answers
How could you increase the solubility of the sugar in a cup of coffee?
Arlecino [84]
Increase the heat of the coffee
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What is the mass, in grams, of one mole of any substance known as?
KATRIN_1 [288]

Answer:

I think it's answer would be A

6 0
3 years ago
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